JFIF to PNG Converter

This tool performs JFIF to PNG conversion by decoding the source JPEG-compliant stream to an RGB buffer, optionally resizing, and encoding to a PNG file. It targets workflows in web development, digital publishing, and asset management where a lossless, broadly compatible PNG is required. The process emphasizes correctness and efficiency, enabling batch processing without manual image editing.

Conceptually, the workflow consists of input validation, color management decisions, and encoding back to a universally supported image format. It supports preserving embedded color profiles and selected metadata when requested, while ensuring that outputs conform to PNG-8/PNG-24 standards. The converter handles common pitfalls such as non-JFIF JPEGs, corrupted streams, or oversized inputs by returning explicit error codes and skipping output generation to maintain pipeline integrity.

Key differentiators include robust handling of color spaces, optional metadata retention, and predictable output naming. It is suitable for automation in CI/CD image pipelines, asset libraries, or any scenario requiring a web-friendly PNG derived from JFIF inputs. The tool avoids modifying pixel data beyond the requested resize, preserving fidelity and avoiding lossy recompression beyond the PNG encoding steps.